Comment 5 for bug 49567

I can confirm this bug on the Feisty beta. It doesn't work most of the time, but sometimes it does. This only happens in list view (in either browser or spatial mode) but not in other trees (like the one in the browser view side pane).

One way of reliably triggering it is to select a subdirectory, and slowly slide your mouse towards the extender from the right until it highlights. The extender is now unresponsive to clicks, indicating a mismatch between the region where it highlights itself and where it responds to clicks.

However, very often it fails to respond even when clicked squarely on the arrow. Usually it'll start responding again after a lot of retries and moving the mouse around.

All this is seen only on selected entries. Other entries work perfectly every time.